What is a difference between GETVPN and IPsec?

What is a difference between GETVPN and IPsec?
A. GETVPN is used to build a VPN network with multiple sites without having to statically configure all devices.
B. GETVPN is based on IKEv2 and does not support IKEv1.
C. GETVPN provides key management and security association management.
D. GETVPN reduces latency and provides encryption over MPLS without the use of a central hub.

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